https://stat.game-gakuen-idolmaster.jp/html/notice/927af65fc7285fdf0cf388faed3c92e3934e8706a4882f8cef3edc07e2d7aecd/index.html

Starting with the addition of Hiro's Step3 and its associated gasha, the logic for determining the skill cards in generated memories will be altered to only consider the cards present at the end of the produce run. The upgrade and customization lottery logic remains the same for these cards.

The upcoming Kunio Idol Week for China and Hiro will focus on Condition Sense and Switching Anomaly.

https://stat.game-gakuen-idolmaster.jp/html/notice/ea377e89f50068ef2b9862fc1f26567cab1345b27a9e4f962d472af2705b9739/index.html

Upcoming Hiro Step3 Gasha

Switch Anomaly Produce SSR
Skill+: 1 Stamina cost and usable only in Fire state. Switch to Charge, +8 Genki, +10 Zeal, +1 to Mental card cost, +1 to Stamina cost of cards (Unlimited Use)
Item+: Whenever Stamina is reduced through skill card cost, +60% increase to Zeal amount, (3 Uses)

Hiro/Sena Support Vocal Anomaly SSR
Item: If Vocal > 700 when obtaining a Charge skill card, +50 P Points and recover 5 Stamina (2 Uses)

Hiro/Tsubame Vocal Anomaly SR
Item: If Vocal > 700 when starting customization, remove a random Trouble card and +40 P Points (1 Use)

Hiro's STEP3 will also take her to affection level 27 with a boost campaign that isn't any different from Sumika's.

>>530562131
Hiro doesn't like to hold others back either so it would take some convincing that China is okay with it.

Role-wise the China producing run would be more likely to form a unit with Hiro as in the Hiro scenario China is actively being supported by Sena.